Sensorless BLDC Motor Tracking Control using EMRAS Controller

The prime objective of this article is to justify a novel type of controller as Enhanced Model Reference Adaptive System (EMRAS) controller for the tracking control of sensor less BLDC motor. The application of this novel form of controller to BLDC drives is discussed in this study, along with a discussion of the key changes in the implementation with relation to speed tracking, rising time, and overshoot. Commutation of BLDC motor is accomplished by the back emf estimation method which follows zero cross detector (ZCD) to substitute the effectivity of hall sensors. The findings of simulations and experiments demonstrate that, when compared to the traditional PI control, EMRAS control produces less torque ripple and a faster tracking response with a low rising time and nearly no overshoot.